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14 Cards in this Set
- Front
- Back
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motion |
an object's change in position relative to a reference point |
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displacement |
the change in position of an object |
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speed |
the distance traveled by an object divided by the time interval during which the motion occured |
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velocity |
the speed of an object in a particular direction |
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acceleration |
the rate at which velocity changes over time |
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force |
an action exerted on a body in order to change the body's state of rest or motion |
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friction |
a force that opposes motion between two surfaces that are in contact |
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static friction |
the force that resists the intiation of sliding motion between two surfaces that are in contact and at rest |
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kinetic friction |
the force that opposes the movement of two surfaces that are in contact and are sliding over each other |
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inertia |
the tendency of an object to resist bring moved or, if the object is moving to resist a change in speed or direction until an outside force acts on the object |
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free fall |
the motion of a body when only the force of gravity is acting on the body |
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terminal velocity |
the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity |
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projectile motion |
curved path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth |
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momentum |
a quantity defined as the product of the mass and velocity of an object |
